What was found
CLT - FLT 7900 - WHILE ON TEST HOP, APPROACHING CLT, THE A HYDRAULIC SYSTEM LIGHT BEGAN FLICKERING. CAPTAIN SHUT DOWN PUMPS AND STARTED GETTING THE B HYDRAULIC SYSTEM LIGHT FLICKERING. CAPTAIN DECLARED AN EMERGENCY AND LANDED AT CLT WITHOUT FURTHER INCIDENT. AIRCRAFT TAXIED TO THE HANGAR UNDER ITS OWN POWER. MAINTENANCE REMOVED AND REPLACED THE A HYDRAULIC SYSTEM PRESSURE MODULE FILTER (P/N AC7681E1Y2) AND PACKING. RESERVICED HYDRAULIC FLUID TO PROPER LEVEL. NO LEAKS NOTED. (M)